Improvement in tuyeres



UNITED STATES PATENT OFFICE.

LEVI WILKINSON, OF NEW HAVEN, CONNECTICUT.

IMPROVEMENT IN TUYERES.

' Specification forming part of Letters Patent No. 54,988, dated May 22,1866.

To all whom it may concern:

Be it known that I, Luv]: WILKINSON, of the city and county of NewHaven,'in the State of Connecticut, have invented a new and use fulImprovement in Tuyeres or .Tweers for Blacksmiths Fires; and I do herebydeclare that the following is a full, clear, and exact description ofthe construction, character, and operation of the same, reference beinghad to the accompany drawings, which make part of this specification, inwhich- Figure 1 is a perspective view of the tuyere complete, ready tobe inserted into the forge for use. Fig. 2 is a section of the same cut10ngitudinally through the center.

My improvement consists in making the tnyere long enough to extend sofar as to force the blast horizontally under the central part of thefire, so that it will ascend by its own levity only through the centralpart of the fire, and so that it will tend to spread in all directions,except downward, from the end of the tuyere, and thus equalize the forceof the blast more effectually than in any other form.

I make the tuyere of cast-iron or any other suitable material, though Iconsider cast-iron by far the best material, as it is much less liableto be burned out, and I make it substantially of the form shown in Fig.1, making that I on the outside, as shown at A, Fig. l, and in section,a, A, and A, Fig. 2, for the purpose of making it more durable, 850.

1 make that part of the tube into which the bellows pipe or nozzleenters, as B, Figs. 1 and 2, of a conical or tapering form in the usualway; but I make that part which is within or under the fire withparallel sides, as shown at I), Fig. 2, so that the orifice will be ofthe same size and shape, however much of the inner end may get burnedoff, until the whole of the large part A has been consumed, which, fromits size and situation, will be very durable.

Having made the tuyere as before described, I set it into the mason-workor wall of the fire in such a manner that the large portion A shall beentirely within or over the hearth, so that the fire may be above oraround the whole of it, While the shoulder at a a, will rest against theinner face of the wall, so that no heat from the fire will strike thesmaller or conical part of the tube or pipe B, so as to burn it out orinjure it in that weak part.

What I claim as my invention, and desire to secure by Letters Patent,is-- A cast-iron tuyere, when constructed, shaped, both inside andoutside, and fitted for use substantially as herein described and setforth.

LE VI WILKINSON.

Witnesses R. FITZGERALD, E. W. BALDWIN.

